I routinely carry just 1 credit card, my driver's license, Metrocard and a couple bucks. It goes in my pocket or tucked into top of my bra. That's it. I hate, hate, hate carrying a purse and never do unless there is absolutely no way to avoid it. Up until I found this, I had been using a Tyvek card envelope that I had modified by cutting open the top and duct taping the side. Very functional but I felt silly whipping it out to pay for stuff at expensive restaurants or places like that. (These habits are my own quirk. My bank account is plenty big enough for a leather wallet.) So now with this, I have found the perfect size for my needs, thin, tiny and perfect for pocket or bra stash. Only complaint is the "big skinny" tag in the middle which adds slight thickness, but not too much.
Prostiny, elastic grips contents slightly
ConsElastic grips contents slightly too much. "Big Skinny" label on outside adds thickness.